why wont my dogs hunt for someone else?

I hear of that happening a lot. Thing is, a lot of curs are on the shy side, and when they go to a new home/environment with a new handler, and new other dogs....they have got to have time to adjust to it all in a lot of cases. I know there's the handful out there that you could send anywhere and they'll get straight to business as usual, but in most cases, the dogs need ample time to adjust to their new situation. People get so impatient sometimes and wanna take the dog out the next day before the dog has time to adapt, let alone get an idea who his new handler is, and the dog doesn't perform right.

Also, in more rare occurances, I have seen a couple dogs that will range out and hunt great for one person, but that same dog even after given time to adjust, just flat out won't hunt with someone new. Said dog was sent back to the original owner, and went right back to hunting well.

All in all, I feel that in any venue, when a dog switches homes and handlers, the new handler should give that dog some time to adjust. This seems to be a rule of thumb for dogs period, not just hunting dogs.